Steam-generator.



No. 647,76l. 4 Patented Apr. 17, won.

w. .l. RANTON. STEAM GENERATOR.

(Application tiled 30b9, 1899. I (No Model.) 2 Sheets-Sheet l.

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No. 647,76I. Patented A. r.-|7,, 1900.

w. J. RANTON.

STEAM GENERATOR.

lApplication filed Oct. 9, 1899.) (No Model.) 2 Sheats-$heat 2.

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WITMZSSES hwliw TOR \/VlL.L \/\l l J. P.m\ TON W W BY HIS ATTCURNEYS A NITED STATES PATENT OFFICE.

WILLIAM J. RANTON, OF MINNEAPOLIS, MINNESOTA.

STEAM-G E NERATO R.

sPEoI FIcATioNrormin part of Letters Patent No. 647,761, dated April 17, 1900.

Application filed October 9, 1899.. Serial No. 733,006. (No model.)

To ctZl whom it may concern.-

Be it known that I, WILLIAM J. RANTON, of Minneapolis, Hennepin county, Minnesota, have invented certain new and useful Improvements in Steam-Generators, of which the following is a specification.

My invention relates to upright steam generators or boilers; and the objects of the invention are, first, to provide an upright steamgenerator wherein the use of castings is avoided and being of but few parts is in consequence economical to manufacture; second, to provide an upright steam-generator of the stationary class wherein the fire-pot and water-tubes are inclosed within a shell or jacket and the use of brick settings avoided, and, third, to provide an upright steam-generator wherein an unusually-large heating-surface is exposed to the flames, insuring the rapid generation of steam with a minimum amount of fuel.

The invention consists generally in providing an upright steam-generator wherein the vertical water-tubes and fire-pot are completely submerged in and protected by a circulating body of water.

Further, the invention consists in providing a fire chamber or drum having a series of water-tubes and arranged in the upper part of the shell or jacket, witha series of lines connecting said drum with the fire-p0t.

Further, the invention consists in providing an annular ring or drum outside the shell of the furnace and a series of openings in the shell or jacket communicating with said ring and with the fire-chamber.

Further, the invention consists in providing particular means for obtaining access to the interior of the fire-chamber for cleansing purposes.

Further, the invention consists in particu- -lar constructions and combinations, all as hereinafter described, and particularly pointed out in the claims.

In the accompanying drawings, forming part of this specification, Figure 1 is a verti-' cal sectional view of an upright boiler embodying my invention. Fig. 2 is a sectional View on the line w 00 of Fig. 1. Fig. 3 is a similar section on the line 1 y of Fig. 1.

In the drawings, 2 represents a steel shell or jacket within which, at the base, a fire-pot 3 is concentrically arranged, having an outwardly-turned flange at its lower end secured to and forming a water-tight joint with the inner wall of said shell, a sufficient space being provided between said fire-pot and said opening in said shell and connected therewith by a sleeve 7, forming a passage for the fuel, its outer end being closed by the usual fuel-door. At the top of the fire-pot is a curved crown-sheet 8, securely riveted to the top of said pot and having in its center a circular opening covered by a curved disk or plate 9, forming a pocket or recess in the center of the crown-sheet, into which the flames and products of combustion pass and are deflected back and to the sides of the pot. Above said fire-pot in the upper part of said shell is a cylindrical drum or chamber 10, concentric with said shell and firepot and rigidly secured by a series of staybolts, in the manner heretofore described, and connected with the top of said fire-pot by a series of vertical flues 11, that are riveted over openings in the top of said crown-sheet and in the bottom of said chamber, forming passages through which the flames, smoke, and products of combustion pass from the fire-pot into the interior of said drum. A sufficient space is provided between said drum and the shell of the generator to permit the water to circulate freely therein around and over the top of said drum and between the flues connecting the bottom of the same with said fire-pot, and becoming heated by contact with the walls of said drum, firepot, and flues permits the rapid generation of steam -To increase the heating-surface of the boiler, and thus quicken the generation of steam, I provide a series of vertical watertubes 12 Within said drum 10, the ends of said tubes beingopen and secured to the heads of said drum, and being arranged around the tops of said flues are subjected to an intense heat from the fire-pot,'ca'using the water in said tubes to be heated very rapidly, quick ening the circulation of the same and the generation of steam. These water-tubes I prefer to I arrange substantially in the manner shown in Fig. 1, wherein the tubes near the walls of the drum are substantially ver-- tical and arranged a uniform 'distance from bottom of the drum. Access-is permitted to said flues, said crown-sheet, and the bottom of the drum through a manhole 13, provided in the shell of the generator,-and I also provide a series of tubes 14, fitting within holes I as in said shell'and said drum, through which access may be had to said water-tubes toclean the soot and dirttherefrom, the outer ends'of said tubes being normally closed bysmall caps 15. At the top of the generatorI provide a series of sleeves 16, securely riveted to the shell and said drum over corresponding openings therein and forming smoke-outlets leading to an, annulardr'um or chamber '17,

that is riveted to the outside of said shell over said-smoke-outlets and having in its wall an opening leading to the smoke-pipe-18; This construction permits the smoke and products of combustion to be discharged from the top of the drum on four sides,--and the smoke circling through the chamber 17 aids in heat ing the body of water inclosed within said shell around and over the top of said drum.

The top of the'boiler is completed by a steam dome l9, securely riveted to the shell of the generator-and having a steam-outlet pipe 20 and a series of manholes 21, through which access may be had to the interior of'said dome water-circulating space around the fire-pot,

the lines, and the fire-chamber or water-tube drum an unusually-large heating-surfaceis exposed to the contact of the water, and in consequence rapidgeneration of steam is insured.

The water-tubes Vertically arranged within the drum are directly exposed throughout their entire lengthto the action of the flames,

smoke, and products of combustion that pass up through the vertical flues connecting the top of thefire-pot and said-drum, quicke-ningthe circulation of vwater therein and the gen-' eration of steam,and as the top of the water- 'tube drum is covered with water the ends of the tube at each head of the drum are protected.

. In various ways the details that I have herein described may be modified, and I therefore do not wish to be confined to the particular construction set forth.

Having thus' described my invention, I claim as new and desire to secure by Letters Patent- 1. In a steam-generator, the combination,

with an upright shell or jacket having a com bustion-chamber at one end and a steam-dome at the other, of a drum arranged between said combustion-chamber and said dome, a space being provided between the walls of said drum and said jacket wherein water circulates, a series of stay-bolts connecting said drum and jacket, aseries of water-tubes provided'within said drum, a series of flues connectin g said drum with said comb ustion-chamber, said fiues beingnear the circumference of said drum and chamber, whereby access to the outer-tubes and said stay-bolts ispermit ted, and smoke-outlet passages provided in said drum and jacket, substantially as described. I

2. Ina steam-generator, the combination, with an upright-shell or jacket, of a'combustion-chamber arranged in the base thereof, a drum above said combustion-chamber, a space being provided bet-ween the walls of said drum'and said jacket wherein water circulates, aseries of stay-bolts connecting said drum and said jacket, a series of fines leading from said combustion-chamber to said drum, said flues being near the circumference of said chamber and said drum whereby ac cess may be had to'the inner walls of said d-rum-, aseries-of water-tubes provided in said drum, the tubes near the center of said drum being outwardly inclined or staggered from c the bottom toward the top, smoke-outlet pas sages provided in said drum and jacket,'and

asteam-dome arranged above said drum, substantially as described.

3. In a steam=generator, the combination, with a shell, of a fire-pot therein having a 'curvedcroWn-sheet provided with a central opening, a curved plate covering said opening and forming therewith a recess or pocket, a drum above said fire-pot, a space being provided between the same and said shell wherein water circulates, a series of water-tubes provided within said drum,-a series'of flues connecting the lower end of said drum and said fire-pot, said fiues being'near the circumsupported above said chamber, a series offlues connecting said d'rnm and said chamber, said flues being near the ci'rcumferenceof said ference of said drum and fire-pot and inclosdrum and chamber, a series of water-tubes provided in said drum, their lower ends being accessible through said flues, the central or middle tubes of the series being staggered or inclined from the bottom of said drum toward the top, a steam-dome provided in the top of said shell above said drum, and a series of hand-holes provided in said dome through which access may be had to the upper ends of said tubes for removal or repairs, substantially as described. V 16 In witness whereof I have hereunto set my hand this 4th day of October, 1899.

WILLIAM J. RANTON; In presence of- RICHARD PAUL, M. C. NooNAN. 

